CoolNquiet

From MythDora

I tried this with MythDora 4.0 with no effect. What version did you use? For this to work do we first need to load powernowd? http://www.mythtv.org/wiki/index.php/Powernowd Maybe cpuspeed? Any services that need turned on? --Mgpalmer 16:05, 18 August 2007 (CDT)

If you are running an AMD CPU on the s754, s939, or AM2 platforms you can enable coolNquiet, which saves power and reduces the CPU's heat output by lowering the CPU's multiplier when it is not in use.

Here is how you enable coolNquiet in mythdora:

1. Create a file called "powernow.modules" in /etc/sysconfig/modules

2. Copy and paste this into the file:

/sbin/modprobe cpufreq_stats

/sbin/modprobe cpufreq_powersave

/sbin/modprobe cpufreq_ondemand

/sbin/modprobe cpufreq_conservative

/sbin/modprobe powernow-k8

3. The first four files that are listed in that file are called "governors". As you may have guessed they determine how agressive\conservative the scaling is on your CPU. You should only have one of these loaded at a time, so make sure you comment out (or remove) the three remaining governors. The last clause in that file loads the powernow-k8 module, which is necessary for the operating of coolNquiet under linux, so that one should be left as is.

4. Reboot

Thanks to Eusebio, who originally supplied me with this information.